Are you the kind of person who walks around with a smile on your face, and always sees the glass half full? Well, it turns out, being happy is good for your health. A Harvard review finds that being upbeat and optimistic might help protect against heart disease, The Associated Press reports.

Lead researcher Julia Boehm found that optimism is a particularly key trait, as several studies found the most optimistic people had half the risk of a first heart attack when compared to the least optimistic, the AP reports. Another reason to look on the bright side!

Boehm found that people with a better sense of well-being tend to have healthier blood pressure, cholesterol and weight, and are more likely to exercise, eat healthier, get enough sleep and avoid smoking, the AP reports. Being a negative person, on the other hand, can cause stress that can damage the arteries and the heart, research has found.

The only problem we can find with this review? It's easy to be happy when you're ... happy! When you're in love, you like your job, you can pay your bills -- suddenly, you're going to the gym and avoiding junk food. But it's hard to be happy when life isn't going so great. But why not try?

People always said to me, "you are always seems so happy and smiling like you never had a care." I just tell them thanks for the compliment, but they don't have no idea how many cares I do have at times. There is a song that goes, "the world didn't give it to me (meaning smiles) and the world cannot take it away. I guess I live that philosophy.

Rather we're happy people or not, is 50% dependent on our genes, just as alcoholism, depression, schizophrenia can be passed on genetically, happiness can be passed on too.

Now considering that both my grandparents committed suicide, my mom attempted suicide many times when I was growing up but has spent most her time in different mental institutions after that, I don't exactly expect myself to ever become the happiest person.

I've struggled with depression myself before, and I've recovered, but recovery doesn't mean you're happy. It just means you're neutral. A study showed that most who struggled with serve depression do not become happy when they recover, they just become empty, not happy or depressed.

Now I'd love to wake up one day and just feel happy like I used to be before my depression, but it doesn't seem to matter what I do anymore, I can be around friends, I can do things I enjoy, I can achieve good things but the feeling just doesn't come anymore.

It's not that I'm dwelling on anything or trying to make myself miserable, it's just that I no longer feel things the same way anymore.

I refuse to dwell on things that get you down. I get mad and I get down at times but it's short lived as I fully believe that having a good out look is healthy for you. I give my problems to a higher authority!